Abstract: Tower cranes are complex multi-input multioutput underactuated mechatronics systems. The anti-swing control issue of tower crane with varying suspension cable length and double spherical ...

Abstract: Obstacle avoidance presents a great challenge for the control system of tower cranes due to their uncertain dynamics, underactuated nature, and strong coupling. Aiming at these issues, a ...

We talked to child-development experts, landscapers, and parents to find the best swing sets for your backyard and budget.

Many cities, including San Francisco and Los Angeles, limit the amount a landlord can raise the rent each year — a policy known as rent control. But for nearly 30 years, California has imposed limits ...